Physics, asked by anand155, 1 year ago

the radius of curvature of a concave mirror is 20 cm what is the focal length?

Answers

Answered by raghu37

5

focal length is half of radius so
f=20/2 =10cm

Answered by rrrrrrr3

3

r=2f
20= 2f
f= 20/2
f= -10 cm ans....

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